If you are referring to the Ford Maverick truck, "mod menus" typically refer to the Engineering Test Mode accessed via button combinations on the steering wheel to view hidden vehicle diagnostics like digital tachometers or accurate engine temps. HOW TO ACTIVATE THE STAND MOD MENU (SEP 2023)
Options for God Mode (invincibility), invisibility, and infinite stamina. MAVERICK MOD MENU
Like many native mod menus, it often defaults to the F4 or F8 keys to open, though this can be remapped in the associated .ini configuration files. If you are referring to the Ford Maverick
The ability to instantly spawn any in-game vehicle, including rare or unreleased models, and apply instant performance upgrades. including rare or unreleased models